I think most of the important stuff on the Internet has been built. There will be continued innovation, for sure, but the great problems of the Internet have essentially been solved.

If we drive down the cost of transportation in space, we can do great things.

My motivation for all my companies has been to be involved in something that I thought would have a significant impact on the world.

We need to figure out how to have the things we love, and not destroy the world.

Many things are improbable, only a few are impossible.

With artificial intelligence we are summoning the demon.

When Henry Ford made cheap, reliable cars people said, 'Nah, what's wrong with a horse?' That was a huge bet he made, and it worked.